This randomized controlled clinical trial aims to evaluate and compare the retention, caries prevention, microleakage, and fluoride release of three types of pit and fissure sealants-hydrophilic, nanofilled hydrophobic, and conventional hydrophobic-applied to partially erupted first permanent molars in children aged 5 to 7 years. The study uses a split-mouth design and includes both clinical and laboratory evaluations over an 18-month period. Outcomes will assess sealant effectiveness with and without the use of a bonding agent.
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Retention
Timeframe: 18 months
Caries
Timeframe: 18 months